source: project/chicken/branches/scrutiny/TODO @ 13968

Last change on this file since 13968 was 13968, checked in by felix winkelmann, 11 years ago

a few fixes

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1TODO for chicken                                                        -*- Outline -*-
2================
3
4
5* bugs
6
7** compiler
8*** pre-optimization
9**** changes call-sites and makes them invalid for later pre-optimization
10*** check profiling (-profile vs. profile-declaration)
11**** this doesn't always seem to work, in particular with library units
12**** ##sys#finish-profile should always be invoked
13     is it in `exit'?
14*** when re-defining intrinsics, the compiler should warn and disable re-writes
15    add declaration to keep re-writes enabled for core library files
16*** check in foreign.import.scm and compiler.import.scm whether the import
17    took place in the compiler
18
19** expander
20*** expansion of r5rs_pitfall 4.2 incorrect
21    possibly due to a non-aliased implicit "begin" somewhere
22*** dirty-macros.scm loops when using `defile'
23    possibly due to unrenamed special forms
24*** extended lambda-lists refer to `optional' and `let-optionals[*]'
25    this will break, when these macros are renamed on import or not imported
26    at all
27**** a possible solution is to use internal forms, provided by the "scheme" module.
28
29** modules
30*** `require-extension' fails in interpreter when extension is .so without import library
31    probably because load and import is in same toplevel form, and the
32    load is performed after the import (at runtime). A possibly fix
33    would be to load the extension immediately (at
34    compile-/expansion-time), when import is #t and o import lib
35    exists.
36*** mark import-source (module) on plist of imported symbols and use in re-import warning
37    doesn't work that easily, try to find another solution
38*** DSSSL lambda-lists need imports of `chicken' module ("optional", "let-optionals", ...)
39**** should probably use internal aliases
40
41** libraries
42*** library/runtime: cyclic list checks for assq/assv/assoc/memq/memv/member
43    and C_i_list_tail
44*** finalizers on lexically ref'd data not working in interpreter
45    reported by Jim Ursetto
46    reverted original patch, see patches/finalizer-closures.diff
47
48
49* tasks
50
51** branches
52*** try to improve performance in lazy-gensyms
53
54** expander
55*** test new implementation of `define-for-syntax'
56**** test "numbers" egg
57**** is s48-modules still working?
58*** at some stage remove debug-output in expand.scm
59
60** module issues
61*** need a way to omit generating module registration without generating import lib
62    for example when compiling static version, where implib already exists
63*** code-duplication in compiler and evaluator for ##core#module
64*** "scheme" module does not include some special forms ("define-syntax", etc.)
65*** import-for-syntax imports value bindings into import-env
66    should actually be a distinct meta-import-env.
67    example: we need `(import-for-syntax chicken)' to have access to
68    `receive' in a procedural syntax definition.
69*** curried define performs expansion in empty se - problem?
70    (as comment in expand.scm indicated (##sys#register-export))
71*** check phase separation and module access
72**** see "expander" above
73
74** compiler
75*** test define-rewrite-rule
76*** (csc) generate object-files in /tmp (or TMPDIR)?
77
78** setup/install
79*** setup-download
80**** use "HTTP_PROXY"/"http_proxy" env. var
81**** handle redirects in http-fetch
82**** option in chicken-install to list available eggs
83*** automatically update db after extension installation?
84*** test sudo
85
86** library units
87*** read-mark list should be stored in read-table
88*** ports should have indicator slot about exact type (tcp, file, ...)
89*** normalize-pathname: return short name on windows? (mingw/msvc)
90*** Use record-descriptors instead of symbols as 1st slot in structure objects?
91**** see Kon's proposal for new record-descriptors in "misc/Chicken Runtime Data Type Proposal"
92
93** syntax-error
94*** if ##sys#current-module is set, add name to error message?
95*** fluidly keep track of expanded forms (extend meaning of culprit) to pprint pruned expr on error
96
97** build
98*** need script to process import libraries for generating indices for doc.callcc.org
99    then tell Toby Butzon about it
100*** test DESTDIR and proper linking
101*** test special status of setup-api.import.scm and setup-download.import.scm
102    touching .c files caused chicken-install to be rebuilt; did using
103    .SECONDARY help?
104*** using "touch" with WINDOWS_SHELL won't work (need alternative)
105*** extend scripts/guess-platforms.sh for more platforms
106*** is the Mac build properly working?
107
108** documentation
109*** document qs, normalize-pathname
110
111** scrutiny
112*** document type-specifiers
113*** handle #!optional in procedure type signatures
114*** allow giving toplevel procedure names to `scrutinize' option?
115
116
117* tests
118
119** optional longer run (env. var)
120*** syntax-rules-stress-test
121*** fully compiled ec-tests
122** 3-stage bootstrap with compiler-output comparison
123
124
125* documentation
126
127** document new .meta entries in tutorials on wiki
128   depends, test-depends
129** chicken.texi needs to be regenerated
130
131
132* optimizations
133
134** self-recursion optimization
135   what MacScheme called "benchmark-mode" (assume self-calls are recursion)
136*** needs declaration or option, >= -O2
137
138** when inlining, consing arg-list with "list" may make get-keyword possible foldable
139
140** compiler-support for get-keyword ?
141
142** lambda-fusion / "fuse-and-dispatch" (suggested by Alex Shinn)
143   convert groups of local lambdas referenced to only in operator-position into
144   looping lambda + dispatch (static variable can be used), otherwise similar to
145   a conditional
146
147** lazy gensyms (see "lazy-gensyms" branch)
148
149** handle optional args primitively
150   for example, set to distinguished val (checking argc) on C level, core
151   primitive for checking this - should be quite simple, but llist processing
152   (decompose-lambda-list) will be more expensive and cumbersome.
153
154** pre-hashed symbols (extra symbol slot)
155   The memory usage should be acceptable, performance gain is hard to guess.
156   Some experiments indicate that hashing the string is cheaper than it appears,
157   but low-level hashtables should get the most of this (and thus speed up
158   the compiler)
159
160** Lisp2-hack by Dybvig
161*** add function-cell to symbol, call on direct call without checks
162*** initialized to trap function on set!/define, which does fixup
163*** would also allow inline-caching hacks
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